Joshua has a disease in which the walls of his small intestine have become painfully inflamed. his diagnosis is

Inflammatory bowel disease is condition that involves chronic inflammation in a portion or all parts of the digestive tract. It is often painful and debilitating which can be life-threatening and may lead to risk for colon cancer. With inflammatory bowel disease, the small and large intestines or bowels become inflamed (there is redness or swelling).

Its symptoms include: severe or chronic abdominal pain, diarrhea, sudden weight loss, lack of appetite or rectal bleeding.

It has two major types the ulcerative colitis and Crohn's disease. The primary difference between the two is the parts of the digestive tracts that they affect. Ulcerative colitis causes inflammation and ulcers only the top layer of the large intestine. Whereas, Crohn's disease commonly affects the end of the small intestine (ileum) and the proximal part of the colon. Such inflammation causes swelling and scar tissue that thickens the intestinal wall.

the answer is c.) there is a warm front in region a and a stationary front in region b.

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.